WO2013145245A1 - Structure en nid d'abeilles, filtre en nid d'abeilles pour purification de gaz d'échappement et dispositif de purification de gaz d'échappement - Google Patents

Structure en nid d'abeilles, filtre en nid d'abeilles pour purification de gaz d'échappement et dispositif de purification de gaz d'échappement Download PDF

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Publication number
WO2013145245A1
WO2013145245A1 PCT/JP2012/058471 JP2012058471W WO2013145245A1 WO 2013145245 A1 WO2013145245 A1 WO 2013145245A1 JP 2012058471 W JP2012058471 W JP 2012058471W WO 2013145245 A1 WO2013145245 A1 WO 2013145245A1
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Prior art keywords
honeycomb
exhaust gas
adhesive layer
honeycomb structure
inorganic
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Ceased
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PCT/JP2012/058471
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English (en)
Japanese (ja)
Inventor
弘平 太田
將平 島田
寿英 伊藤
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Ibiden Co Ltd
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Ibiden Co Ltd
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Publication date
Application filed by Ibiden Co Ltd filed Critical Ibiden Co Ltd
Priority to JP2014507209A priority Critical patent/JP5990572B2/ja
Priority to PCT/JP2012/058471 priority patent/WO2013145245A1/fr
Priority to EP12872399.6A priority patent/EP2832710B1/fr
Publication of WO2013145245A1 publication Critical patent/WO2013145245A1/fr
Priority to US14/499,249 priority patent/US20150013284A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
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    • C04B2237/708—Forming laminates or joined articles comprising layers of a specific, unusual thickness of one or more of the interlayers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T428/24149—Honeycomb-like

Definitions

  • the present invention relates to a honeycomb structure, a honeycomb filter for exhaust gas purification, and an exhaust gas purification device.
  • the exhaust gas discharged from an internal combustion engine such as a diesel engine contains particulates such as soot (hereinafter also referred to as PM), and in recent years, it has become a problem that this PM is harmful to the environment or the human body. ing. Further, since harmful gas components such as CO, HC or NOx are contained in the exhaust gas, there is a concern about the influence of the harmful gas components on the environment or the human body.
  • PM soot
  • cordierite is used as an exhaust gas purification device that collects PM in exhaust gas by being connected to an internal combustion engine and purifies harmful gas components in exhaust gas such as CO, HC, or NOx contained in the exhaust gas.
  • Various honeycomb structures made of porous ceramics such as silicon carbide have been proposed.
  • honeycomb structures a plurality of honeycomb fired bodies made of columnar porous ceramics, in which a large number of cells are arranged in parallel in the longitudinal direction with cell walls separated, are bound together via an adhesive layer to separate the cells.
  • honeycomb structure in which either one end of a cell wall is sealed and functions as a filter.
  • Patent Document 1 As a conventional honeycomb structure as described above, in Patent Document 1, even if a local temperature change caused by local combustion or the like occurs, the generated thermal stress can be relaxed, A honeycomb filter that is less prone to cracking and excellent in strength and durability is disclosed.
  • the thermal expansion coefficient ⁇ L of the adhesive layer and the thermal expansion coefficient ⁇ F of the honeycomb fired body are 0.01 ⁇
  • the honeycomb filter disclosed in Patent Document 1 described above has the following problems. That is, the honeycomb filter is an invention made on the assumption that it is used in a wide temperature range of 10 to 800 ° C. which is a realistic temperature range, but it is a temperature exceeding the above-mentioned assumption very rarely. It may be used at a temperature exceeding 800 ° C., particularly at a temperature range of 1200 ° C. or higher. When used at such an extremely high temperature, cracks are generated inside the honeycomb filter, so There remains a problem that the curate may leak outside the regulation value.
  • the present inventors have included an alumina fiber and an inorganic balloon in the adhesive layer, while oxidizing the honeycomb fired body to form a honeycomb fired body.
  • an oxide layer containing silicon on the surface of silicon carbide, a honeycomb in which particulates such as soot do not leak outside beyond the regulation value even when used in a temperature range of 1200 ° C. or higher.
  • the present inventors have found that a structure, a honeycomb filter using the honeycomb structure, and an exhaust gas purification apparatus using the honeycomb filter can be provided, and the present invention has been completed.
  • a plurality of silicon carbide honeycomb fired bodies in which a large number of cells are arranged in parallel in the longitudinal direction with a cell wall therebetween are bound together via an adhesive layer.
  • the adhesive layer includes at least an alumina fiber and an inorganic balloon.
  • an oxide layer containing silicon is formed on the surface of silicon carbide particles constituting the honeycomb fired body, and the oxide layer is exposed to a high temperature of 1500 to 1600 ° C.
  • the endothermic reaction of the following formula (1) or (2) proceeds, Due to this endothermic reaction, the temperature of the honeycomb fired body is unlikely to rise, and the honeycomb structure can be prevented from reaching a high temperature.
  • the amount of heat absorbed per mole of SiO 2 by the following reaction is shown.
  • the silicon carbide-based fired body refers to a fired body in which silicon carbide is 60% by weight or more.
  • the silicon carbide-based fired body may include a material other than silicon carbide, and may include, for example, 40% by weight or less of metal silicon as a material other than silicon carbide.
  • the silicon carbide fired body contains metallic silicon, an oxide layer containing silicon is also formed on the surface of metallic silicon.
  • the silicon carbide particles constituting the honeycomb fired body there is a constricted portion generated when two particles called “neck” are connected. Silicon carbide particles are bonded to each other through a neck.
  • the coupling angle of the neck is small, and the coupling end of the neck is sharp. Therefore, when an external force or thermal shock is applied to the honeycomb fired body composed of such silicon carbide particles, stress concentrates on the joint end portion of the neck.
  • the neck coupling angle becomes large and the neck coupling end becomes smooth. Therefore, the stress concentration on the coupling end of the neck is alleviated. As a result, it is considered that the mechanical strength of the honeycomb fired body is improved.
  • the adhesive layer includes at least an alumina fiber and an inorganic balloon, and when the alumina fiber is used as a material in the adhesive layer, it does not melt or undergo phase transformation up to about 1400 ° C. Even at a high temperature of 1200 ° C. or higher, there is an effect of stopping the development of cracks, and the strength of the adhesive layer is hardly deteriorated. Moreover, since the inorganic balloon has an effect of stopping the development of cracks, mechanical deterioration of the adhesive layer can be prevented. Furthermore, since the adhesive layer including the inorganic balloon has a small heat capacity, the thermal conductivity of the adhesive layer is increased, and the thermal stress difference between the honeycomb fired body and the adhesive layer generated during PM combustion is reduced. Can do. As a result, cracks generated in the adhesive layer due to the thermal stress difference can be suppressed, and cracks generated in the honeycomb fired body can be suppressed.
  • the average length of the alumina fibers is 25 to 100 ⁇ m, and the average particle diameter of the inorganic balloon is 70 to 300 ⁇ m.
  • the adhesive layer constituting the honeycomb structure according to claim 2 contains alumina fibers having an average length of 25 to 100 ⁇ m and an appropriate length. Therefore, alumina fibers are contained in the adhesive layer. The dispersibility of is improved. Due to this, the adhesive layer excluding the portion where the inorganic balloon is present has few voids and the like, has a dense structure, improves mechanical strength, and does not easily generate cracks. Moreover, since the alumina fiber having the above-described length has an effect of stopping the progress of cracks, the progress of the cracks can be stopped even if a crack occurs in the adhesive layer.
  • the adhesive layer constituting the honeycomb structure according to claim 2 includes an inorganic balloon having an average particle diameter of 70 to 300 ⁇ m, and the inorganic balloon has a length relative to the length of the alumina fiber. The size is just right, both the alumina fiber and the inorganic balloon are more easily dispersed, the voids are uniformly dispersed, and the adhesive layer becomes dense except for the portion where the inorganic balloon is present. Furthermore, the well-dispersed inorganic balloon also has an effect of stopping the progress of cracks, so that even when cracks occur in the adhesive layer, the progress of cracks can be reliably stopped.
  • the adhesive layer including the inorganic balloon has a small heat capacity, the thermal conductivity of the adhesive layer is increased, and the thermal stress difference between the honeycomb fired body and the adhesive layer generated during PM combustion is reduced. Can do. As a result, cracks generated in the adhesive layer due to the thermal stress difference can be suppressed, and cracks generated in the honeycomb fired body can be suppressed.
  • the average length of the alumina fibers is less than 25 ⁇ m, the length of the alumina fibers is too short, so that the fibers tend to aggregate and the dispersibility tends to be lowered.
  • the alumina fiber has an effect of stopping the progress of cracks. However, if the length of the alumina fiber is too short, the effect of suppressing the progress of cracks is hardly obtained. On the other hand, even if the average length of the alumina fiber exceeds 100 ⁇ m, the length of the alumina fiber becomes too long, so that it becomes easy to orient in a certain direction and the dispersibility tends to be lowered.
  • the inorganic balloon is too small in size, so that the dispersibility of the alumina particles, the inorganic binder, and the inorganic particles is deteriorated. Since the voids are likely to be created in the agent layer and it is difficult to become dense, the strength decreases. On the other hand, when the average particle diameter of the inorganic balloon exceeds 300 ⁇ m, the inorganic balloon is too large compared to the adhesive layer, and therefore, a portion with low strength is easily formed.
  • the aspect ratio (fiber length / fiber diameter) of the alumina fiber is 3 to 30. For this reason, the mechanical strength of the adhesive layer is further improved, and even if cracks occur in the adhesive layer, the progress of the cracks can be more reliably stopped.
  • the aspect ratio is less than 3, it is difficult to obtain an effect of improving the mechanical strength and an effect of suppressing crack progress.
  • the aspect ratio exceeds 30, the alumina fiber is easily broken when the adhesive layer is formed, and the above-described effect is hardly obtained.
  • the oxide layer has a thickness of 100 to 600 nm.
  • an oxidizing atmosphere is formed during PM combustion, and therefore, it is considered that an oxide film is formed on the honeycomb structure.
  • the temperature distribution of the honeycomb structure is not uniform, and the thickness of the oxide film becomes non-uniform. Therefore, it is difficult to form a uniform oxide film having a thickness of 100 to 600 nm under such conditions.
  • the honeycomb structure of the present invention has an oxide film of 100 nm or more formed before use, the effects of the present invention are easily obtained.
  • the thickness of the oxide layer is 100 to 600 nm
  • heat applied to the adhesive layer can be reduced, and crystallization (cristobalite) of the silica content in the adhesive layer can be prevented.
  • the joint end portion of the neck becomes smooth, so that the mechanical strength is reduced.
  • the thickness of the oxide layer is less than 100 nm, the thickness of the oxide layer is too thin, so that the amount of heat absorbed by the above endothermic reaction is reduced, and the silica component is easily crystallized. Further, it is not possible to sufficiently obtain the effect of relaxing the stress concentration at the coupling end portion of the neck.
  • the thickness of the oxide layer exceeds 600 nm, the bonding portion between the silicon carbide particles in the neck portion becomes too small, and the mechanical strength may be lowered. Furthermore, even if the thickness of the oxide layer is increased further, the effect of suppressing crystallization of the silica content in the adhesive layer cannot be improved.
  • the adhesive layer further includes inorganic particles and an inorganic binder.
  • the alumina fiber, the inorganic balloon, and the inorganic particles in the adhesive layer are bonded by the inorganic binder, and the adhesive layer is excellent in mechanical characteristics.
  • the adhesive layer contains inorganic particles, a denser adhesive layer can be formed and the mechanical properties are improved.
  • the adhesive strength can be increased by allowing the inorganic binder and the inorganic particles to enter pores on the outer surface of the honeycomb fired body.
  • the content of the inorganic balloon is 5.0 to 50.0% by volume. For this reason, the mechanical characteristics as a filter can be maintained.
  • the content of the inorganic balloon is less than 5.0% by volume, the content of the inorganic balloon is too small, so that the dispersibility of the material constituting the adhesive layer is deteriorated, voids are easily formed, and the strength is reduced.
  • the heat capacity of the adhesive layer is not reduced, the difference in thermal stress generated between the honeycomb fired body and the adhesive layer due to PM combustion cannot be reduced. Therefore, cracks are generated in the adhesive layer, which induces the generation of cracks in the honeycomb fired body, and soot leakage occurs.
  • the content of the inorganic balloon exceeds 50% by volume, the content of the inorganic balloon is excessively increased, so that the remaining material is excessively decreased, and the strength is reduced and cracks are liable to develop.
  • the content of the alumina fiber is 5.0 to 50.0% by volume.
  • the alumina fiber in an adhesive bond layer can be disperse
  • the content of the alumina fiber is less than 5.0% by volume, the content of the alumina fiber is too small, and the reinforcing effect of the adhesive layer by the fiber is small. Moreover, it becomes difficult to obtain the effect of suppressing the progress of cracks.
  • the content of the alumina fiber exceeds 50.0% by volume, the amount of the alumina fiber is too large, so that the dispersibility of the alumina fiber is lowered and the mechanical characteristics are easily biased.
  • the inorganic balloon is a fly ash balloon.
  • the fly ash balloon is nearly spherical, and its components are silica and alumina, so there is no fear of melting or the like even when exposed to a high temperature of 1200 ° C. or higher.
  • the fly ash balloon has a small specific gravity, the heat capacity of the adhesive layer can be lowered.
  • the stress difference from the honeycomb fired body can be reduced.
  • the occurrence of cracks in the adhesive layer due to the thermal stress difference can be suppressed, the cracks generated in the honeycomb fired body can be suppressed, and soot leakage can be suppressed.
  • the inorganic particles are silicon carbide particles. For this reason, an adhesive bond layer turns into an adhesive bond layer excellent in heat resistance and mechanical characteristics.
  • the inorganic binder is a solidified product of silica sol or alumina sol. Since silica sol or alumina sol is used as a raw material for forming the inorganic binder, the adhesive layer has excellent heat resistance.
  • An exhaust gas purification honeycomb filter according to claim 11 is an exhaust gas purification honeycomb filter arranged in an exhaust passage of an internal combustion engine and configured to filter particulates discharged from the internal combustion engine.
  • a honeycomb structure according to any one of claims 1 to 10 is used.
  • the exhaust gas purifying apparatus is wound around a casing, an exhaust gas purifying honeycomb filter accommodated in the casing, and the exhaust gas treatment body, and is disposed between the exhaust gas treatment body and the casing.
  • An exhaust gas purification device comprising a holding sealing material,
  • the exhaust gas purifying honeycomb filter according to claim 11 is used as the exhaust gas purifying honeycomb filter.
  • FIG. 1 is a perspective view schematically showing an example of a honeycomb structure according to the first embodiment of the present invention.
  • Fig. 2 (a) is a perspective view schematically showing an example of a honeycomb fired body constituting the honeycomb structure of the present invention
  • Fig. 2 (b) is a diagram of the honeycomb fired body shown in Fig. 2 (a). It is AA sectional view taken on the line.
  • Fig.3 (a) is explanatory drawing which shows typically the coupling
  • FIG.3 (b) is the partial expansion of the silicon carbide particle shown to Fig.3 (a).
  • FIG. FIG. 4 is a cross-sectional view showing a state in which an aggregate of honeycomb fired bodies is produced using an adhesive paste.
  • FIG. 5 is a cross-sectional view schematically showing an example of the exhaust gas purifying apparatus according to the first embodiment of the present invention.
  • FIG. 1 is a perspective view schematically showing an example of a honeycomb structure according to the first embodiment of the present invention.
  • FIG. 2A is an example of a honeycomb fired body constituting the honeycomb structure of the present invention.
  • FIG. 2B is a schematic perspective view, and FIG. 2B is a cross-sectional view taken along the line AA of the honeycomb fired body shown in FIG.
  • a plurality of honeycomb fired bodies 110 having a shape as shown in FIGS. 2A and 2B are bundled through an adhesive layer 101 to form a ceramic block 103. Furthermore, a coat layer 102 is formed on the outer periphery of the ceramic block 103.
  • a large number of cells 111 are arranged in parallel in the longitudinal direction (direction a in FIG. 2 (a)) with a cell wall 113 therebetween. Any one end of the cell 111 is sealed with a sealing material 112. Therefore, the exhaust gas G that has flowed into the cell 111 with one end face opened always flows out from the other cell 111 with the other end face open after passing through the cell wall 113 separating the cells 111. Therefore, the cell wall 113 functions as a filter for collecting PM and the like.
  • the honeycomb fired body 110 constituting the honeycomb structure 100 according to the first embodiment of the present invention is composed of a silicon carbide honeycomb fired body 110.
  • the silicon carbide honeycomb fired body 110 means a fired body containing 60% by weight or more of silicon carbide and 40% by weight or less of metal silicon, and may contain no ceramic other than silicon carbide.
  • the particles may be bonded with metallic silicon or the like.
  • a silicon-containing oxide layer (hereinafter, also simply referred to as an oxide layer) is formed on the surface of silicon carbide particles.
  • the lower limit of the thickness of the oxide layer is preferably 100 nm, and more preferably 200 nm.
  • the upper limit of the thickness of the oxide layer is desirably 600 nm, and more desirably 400 nm.
  • the heat applied to the adhesive layer 101 can be reduced, and the crystallization (cristobarite) of the silica content in the adhesive layer 101 can be prevented. It is possible to prevent the adhesive layer 101 from further expanding the cracks of the honeycomb fired body 110 due to the change in thermal expansion accompanying the crystallization of the silica component, and promoting the leakage of particulates.
  • the honeycomb fired body 110 is bonded in a state in which a large number of silicon carbide particles as aggregates have a large number of pores between them, or a plurality of silicon carbide particles are bonded in a state of having pores therein.
  • FIG. 3A is an explanatory view schematically showing a bonding state between silicon carbide particles constituting the honeycomb fired body 110.
  • FIG.3 (b) is the elements on larger scale of the silicon carbide particle shown to Fig.3 (a).
  • the silicon carbide particles 31 constituting the honeycomb fired body 110 are bonded to each other through a neck 31a.
  • An oxide layer 32 containing silicon is formed on the surface of the silicon carbide particles 31.
  • the coupling angle of the neck 31a is increased, and the coupling end portion of the neck 31a is smooth. Therefore, stress concentration on the coupling end portion 31a of the neck is alleviated. As a result, it is considered that the mechanical strength of the honeycomb fired body is improved.
  • the silicon carbide particles constituting the honeycomb fired body 110 have an average particle diameter of about 11 to 20 ⁇ m. Therefore, when the thickness of the oxide layer is 100 to 600 nm, the thickness of the oxide layer is very thin compared to the silicon carbide particles, and therefore, even when used as a filter, the pressure loss is adversely affected. There is nothing.
  • the thickness of the oxide layer can be measured using X-ray photoelectron spectroscopy (XPS).
  • XPS is an analysis method that irradiates a sample surface with X-rays and measures the energy of the generated photoelectrons with a device called an energy analyzer.
  • the constituent elements of the sample and their electronic states can be analyzed by XPS.
  • XPS X-ray photoelectron spectroscopy
  • the depth (thickness) of the oxide layer can be determined by analyzing the composition by XPS while scraping the surface of the sample at a constant speed by ion sputtering. . Based on the measurement results using such a measurement method, it is estimated that an oxide layer having a thickness of 100 to 600 nm is formed on the surface of the silicon carbide particles.
  • the porosity of the honeycomb fired body 110 is not particularly limited, but is preferably about 40 to 70 vol%. When the porosity is less than 40 vol%, the honeycomb structure 100 is likely to be clogged. On the other hand, when the porosity exceeds 70 vol%, the strength of the honeycomb fired body 110 is lowered and easily broken.
  • the porosity can be measured by, for example, a mercury intrusion method.
  • the average pore diameter of the honeycomb fired body 110 is preferably 5 to 100 ⁇ m. If the average pore diameter is less than 5 ⁇ m, the particulates are easily clogged. On the other hand, when the average pore diameter exceeds 100 ⁇ m, the particulates easily pass through the pores, the ability to collect the particulates is lowered, and the function as a filter is lowered.
  • the thickness of the cell wall 113 of the honeycomb fired body 110 of the present invention is not particularly limited, but is preferably 0.1 to 0.4 mm. If the thickness of the cell wall 113 of the honeycomb fired body 110 is less than 0.1 mm, the thickness of the cell wall supporting the honeycomb structure may be reduced, and the strength of the honeycomb fired body 110 may not be maintained. On the other hand, if the thickness of the cell wall 113 of the honeycomb fired body 110 exceeds 0.4 mm, the pressure loss of the honeycomb structure 100 may be increased.
  • the thickness of the outer wall (outer peripheral wall) 102 included in the honeycomb fired body 110 constituting the honeycomb structure 100 of the present invention is not particularly limited, but is the same as the thickness of the cell wall 113 of the honeycomb fired body 110. It is desirable that the thickness is 0.1 to 0.4 mm.
  • the cell density (the number of cells per unit area) in the cross section perpendicular to the longitudinal direction of the honeycomb fired body 110 is not particularly limited, but a desirable lower limit is 16.0 cells / cm 2 (100 cells / in 2 ), The desirable upper limit is 93.0 / cm 2 (600 / in 2 ), the more desirable lower limit is 38.8 / cm 2 (250 / in 2 ), and the more desirable upper limit is 77.5 / cm 2. 2 (500 pieces / in 2 ).
  • the adhesive layer 101 constituting the honeycomb structure 100 according to the first embodiment of the present invention will be described.
  • the adhesive layer 101 for bonding the honeycomb fired bodies 110 includes at least an alumina fiber and an inorganic balloon.
  • the lower limit of the average length of the alumina fiber is preferably 25 ⁇ m and more preferably 40 ⁇ m.
  • the upper limit of the average length of the alumina fiber is preferably 100 ⁇ m, and more preferably 60 ⁇ m.
  • the average length of the alumina fibers is less than 25 ⁇ m, the length of the alumina fibers is too short, so that the fibers tend to aggregate and the dispersibility tends to be lowered.
  • Alumina fiber has the effect of stopping the development of cracks. However, if the length of the alumina fiber is too short, it becomes difficult to obtain the effect of suppressing the progress of cracks. On the other hand, even if the average length of the alumina fiber exceeds 100 ⁇ m, the length of the alumina fiber becomes too long, so that it becomes easy to orient in a certain direction and the dispersibility tends to be lowered.
  • the aspect ratio (fiber length / fiber diameter) of the alumina fiber is desirably 3 to 30.
  • the mechanical strength of the adhesive layer is further improved, and even when a crack is generated in the adhesive layer, the progress of the crack can be more reliably stopped.
  • the alumina fiber may contain only alumina (Al 2 O 3 ), or may contain silica (SiO 2 ) in addition to alumina.
  • the inorganic balloon is not particularly limited, and examples thereof include an alumina balloon, a glass micro balloon, a shirasu balloon, a fly ash balloon (FA balloon), and a mullite balloon. Among these, a fly ash balloon is desirable.
  • the lower limit of the average particle size of the inorganic balloon is desirably 70 ⁇ m, and more desirably 150 ⁇ m.
  • the upper limit of the average particle size of the inorganic balloon is desirably 300 ⁇ m, and more desirably 200 ⁇ m.
  • the inorganic balloon is usually spherical, and the average particle size is the average diameter of the spherical particles.
  • the inorganic balloon is too small in size, so that the dispersibility of the alumina particles, the inorganic binder, and the inorganic particles is deteriorated. Since the voids are likely to be created in the agent layer and it is difficult to become dense, the strength decreases. On the other hand, when the average particle diameter of the inorganic balloon exceeds 300 ⁇ m, the inorganic balloon is too large compared to the adhesive layer, and therefore, a portion with low strength is easily formed.
  • the adhesive layer may further contain inorganic particles and an inorganic binder.
  • the inorganic particles include ceramic particles such as nitride ceramics such as aluminum nitride, silicon nitride, boron nitride, and titanium nitride, and carbide ceramics such as silicon carbide, zirconium carbide, titanium carbide, tantalum carbide, and tungsten carbide. . These may be used alone or in combination of two or more.
  • silicon carbide particles having excellent thermal conductivity are desirable.
  • the lower limit of the average particle size of the inorganic particles is desirably 0.01 ⁇ m, and more desirably 0.1 ⁇ m.
  • the upper limit of the average particle diameter of the inorganic particles is desirably 100 ⁇ m, more desirably 15 ⁇ m, and further desirably 10 ⁇ m. If the particle size of the inorganic particles is less than 0.01 ⁇ m, the cost may increase. On the other hand, if the particle size of the inorganic particles exceeds 100 ⁇ m, the filling rate may be deteriorated and the adhesive force and the thermal conductivity may be reduced. is there.
  • the inorganic binder examples include solidified materials such as silica sol, alumina sol, and titania sol. These may be used alone or in combination of two or more.
  • the inorganic binder is silica, alumina, titania, etc., in which fine oxides suspended in an aqueous solution are solidified when the adhesive layer is dried or fired, and alumina fibers, inorganic balloons, It plays a role of bonding inorganic particles.
  • the inorganic binder also serves to bond the adhesive layer and the honeycomb fired body.
  • a solidified product of silica sol or alumina sol is desirable.
  • the solidified product refers to silica, alumina, titania or the like that is substantially free of moisture formed by forming an adhesive paste layer and then drying or heating the adhesive paste layer at a temperature higher than that.
  • these solidified products may contain OH groups, crystal water and the like.
  • the lower limit of the content of the alumina fiber contained in the adhesive layer 101 is preferably 5.0% by volume and more preferably 10% by volume in terms of solid content.
  • the upper limit of the content of the alumina fiber is preferably 50.0% by volume and more preferably 30% by volume in terms of solid content.
  • the content of the alumina fiber is less than 5.0% by volume, the content of the alumina fiber is too small, and the reinforcing effect of the adhesive layer by the fiber is small. Moreover, it becomes difficult to obtain the effect of suppressing the progress of cracks.
  • it exceeds 50.0% by volume the amount of alumina fiber is too large, so that the dispersibility of the alumina fiber is lowered, and the mechanical characteristics are likely to be biased.
  • the lower limit of the shot content of the alumina fiber is desirably 1% by volume
  • the upper limit of the shot content of the alumina fiber is desirably 10% by volume, more desirably 5% by volume, and further desirably 3% by volume. Setting the shot content to less than 1% by volume is difficult in production, and if the shot content exceeds 10% by volume, the wall surface of the porous ceramic member 20 may be damaged.
  • the shot content in the alumina fiber refers to the percentage by weight in the alumina fiber of shots (non-fibrous particles) that cannot remain as fibers but remain as particles.
  • the lower limit of the content of the inorganic balloon contained in the adhesive layer 101 is preferably 5.0% by volume and more preferably 10% by volume in terms of solid content.
  • the upper limit of the content of the inorganic balloon is preferably 50.0% by volume and more preferably 45% by volume in terms of solid content.
  • the lower limit of the content of the inorganic particles contained in the adhesive layer 101 is preferably 3% by volume, more preferably 10% by volume, and still more preferably 20% by volume in terms of solid content.
  • the upper limit of the content of the inorganic particles is preferably 80% by volume, more preferably 60% by volume, and still more preferably 40% by volume in terms of solid content.
  • the thermal conductivity may be reduced.
  • the content exceeds 80% by volume the adhesive strength is reduced when the adhesive layer 14 is exposed to a high temperature. May be invited.
  • the lower limit of the content of the inorganic binder contained in the adhesive layer 101 is preferably 1% by volume and more preferably 5% by volume.
  • the upper limit of the content of the inorganic binder is desirably 30% by volume, more desirably 15% by volume, and further desirably 9% by volume. If the content of the inorganic binder is less than 1% by volume, the adhesive strength may be reduced. On the other hand, if it exceeds 30% by volume, the thermal conductivity may be reduced.
  • the thickness of the adhesive layer 101 is desirably 0.3 to 3.0 mm.
  • the adhesive layer 101 configured as described above enters the inside of the honeycomb fired body 110 at the interface with the honeycomb fired body 110, and solidifies the inorganic binder. Etc., the adhesive layer 101 and the honeycomb fired body 110 are firmly bonded, and the coat layer 102 is formed on the outer periphery.
  • the material constituting the coat layer 102, the weight ratio of the material, and the like may be the same as those of the adhesive layer 101.
  • the thickness of the coat layer 102 is desirably 0.1 to 3 mm.
  • the coat layer may not be required.
  • the ceramic constituting the honeycomb fired body is made of silicon carbide
  • the material of the honeycomb fired body may be silicon carbide and metal silicon.
  • a forming step is performed in which a honeycomb formed body is manufactured by extruding a wet mixture containing silicon carbide powder and a binder.
  • a wet mixture for manufacturing a honeycomb formed body is prepared by mixing silicon carbide powder having different average particle diameters, an organic binder, a liquid plasticizer, a lubricant, and water.
  • the wet mixture is put into an extruder and extruded to produce a honeycomb formed body of a predetermined shape.
  • the honeycomb formed body is cut into a predetermined length and dried using a microwave dryer, hot air dryer, dielectric dryer, vacuum dryer, vacuum dryer, freeze dryer, or the like. Then, a sealing step of filling a predetermined cell with a sealing material paste as a sealing material and sealing the cell is performed.
  • the ceramic raw material (wet mixture) can be used as the sealing material paste.
  • the conditions for the cutting step, the drying step, and the sealing step the conditions conventionally used when manufacturing a honeycomb fired body can be applied.
  • a degreasing step of heating the organic matter in the honeycomb formed body in a degreasing furnace is performed, and the honeycomb fired body is transported to the firing furnace and subjected to the firing step to produce a honeycomb fired body.
  • the conditions conventionally used when manufacturing a honeycomb fired body can be applied.
  • the honeycomb formed body is heated at 300 to 650 ° C. in an oxygen-containing atmosphere.
  • the silicon carbide particles in the honeycomb formed body are sintered by heating at 2000 to 2200 ° C. in a non-oxidizing atmosphere.
  • an oxidation process is performed in which the honeycomb fired body is oxidized by heat treatment at 1100 to 1400 ° C. for 1 to 30 hours in an oxidizing atmosphere. Through the oxidation step, an oxide layer is formed on the surface of the silicon carbide particles constituting the honeycomb fired body.
  • the oxidation step is performed in an atmosphere containing oxygen, and is preferably performed in an air atmosphere from the viewpoint of cost.
  • the oxygen concentration (content converted to oxygen) in the oxidizing atmosphere is not particularly limited, but is preferably 5 to 21% by volume. In view of cost, it is desirable to use air.
  • the oxygen concentration in the oxidizing atmosphere is less than 5% by volume, oxidation of the surface of the silicon carbide particles of the honeycomb fired body becomes unstable, and it becomes difficult to form an oxide layer having a desired thickness. Further, if the oxygen concentration in the oxidizing atmosphere is less than 5% by volume, it is necessary to perform heat treatment for a long time, and the production efficiency tends to decrease.
  • the oxygen concentration in the oxidizing atmosphere exceeds 21% by volume, a process for generating the oxidizing atmosphere, such as preparing oxygen gas, is required, and the manufacturing efficiency tends to be reduced.
  • the heat treatment temperature in the oxidation step is desirably 1100 to 1400 ° C.
  • the heat treatment temperature is less than 1100 ° C., it is difficult to form an oxide layer having a desired thickness.
  • the heat treatment temperature exceeds 1400 ° C., it becomes difficult to control the thickness of the oxide film.
  • the heat treatment time in the oxidation step is preferably 1 to 30 hours, but is appropriately determined according to the heat treatment temperature, the thickness of the target oxide layer, and the like. Specifically, when the heat treatment temperature is 1200 ° C., the heat treatment time is desirably 20 to 22 hours, and when the heat treatment temperature is 1400 ° C., the heat treatment time is desirably 4 to 5 hours. When the heat treatment time is shorter than the lower limit value, it is difficult to form an oxide layer having a target thickness. On the other hand, when the heat treatment time exceeds the upper limit value, an oxide layer thicker than the target thickness is formed.
  • the heat treatment time means a time for maintaining the heat treatment temperature after the temperature is raised to the target heat treatment temperature. Therefore, the time during which the honeycomb fired body is heated in the entire oxidation process includes the time required for temperature increase and decrease in addition to the heat treatment time.
  • an oxide layer having a desired thickness (preferably 100 to 600 nm) can be formed on the surface of the silicon carbide particles constituting the honeycomb fired body.
  • FIG. 4 is a cross-sectional view showing a state in which an aggregate of honeycomb fired bodies is produced using the adhesive paste.
  • the method of forming the adhesive paste layer is not particularly limited.
  • the cross-section of the adhesive paste layer is formed on a table 400 having a V-shaped cross section along the V-shape of the table.
  • the honeycomb fired body 110 (see FIG. 2) is placed, and adhesive paste is applied to the two side surfaces (110a and 110b) facing the upper side of the honeycomb fired body 110 by using a squeegee or the like to obtain a predetermined thickness.
  • an adhesive paste layer 130 is formed.
  • honeycomb fired body 110 is placed on the adhesive paste layer 130. Then, an adhesive paste is further applied to the side facing the upper side of the other honeycomb fired body 110 to form an adhesive paste layer 130, and another honeycomb fired body 110 is mounted on the adhesive paste layer 130.
  • a honeycomb aggregate in which an adhesive paste layer is formed between a predetermined number of honeycomb fired bodies is manufactured.
  • the adhesive paste preferably contains at least an alumina fiber, an inorganic balloon, and an inorganic binder (such as silica sol), and further preferably contains inorganic particles.
  • an alumina fiber, the inorganic balloon, the inorganic binder (silica sol, etc.) and the inorganic particles those described in the above-described honeycomb structure of the present embodiment are used.
  • the preferred range of each component when preparing the adhesive paste is to apply the adhesive paste to the side surface of the honeycomb fired body.
  • the honeycomb fired body is bound and degreased at 700 ° C.
  • the solid content concentration ranges from 5 to 15% by volume for alumina fibers, 35 to 45% by volume for inorganic balloons, and 10 to 15% by volume for inorganic binders. desirable.
  • the material further contains inorganic particles, the range of 30 to 40% by volume of inorganic particles after degreasing is desirable.
  • the adhesive paste may contain an organic binder, but when used as an exhaust gas filter for vehicles, it becomes high temperature, so that it easily decomposes and disappears and causes fluctuations in adhesive strength. It is desirable that the amount is contained.
  • organic binder examples include polyvinyl alcohol, methyl cellulose, ethyl cellulose, carboxymethyl cellulose, and the like. These may be used alone or in combination of two or more. Among the organic binders, carboxymethyl cellulose is desirable.
  • the lower limit of the content of the organic binder in the adhesive paste is solid content, preferably 0.1% by volume, more preferably 0.2% by volume, and still more preferably 0.4% by volume.
  • the upper limit of the content of the organic binder is preferably 5.0% by volume, more preferably 1.0% by volume, and still more preferably 0.6% by volume in terms of solid content.
  • a dispersion medium liquid may be used.
  • the dispersion medium liquid include water, an organic solvent such as acetone, and an alcohol such as methanol.
  • the dispersion paste is added to adjust the viscosity so that the resulting adhesive paste has a certain viscosity, and then used.
  • the viscosity of the adhesive paste is preferably 15 to 25 Pa ⁇ s (10,000 to 20,000 cps (cP)).
  • an adhesive paste layer is formed by applying an adhesive paste on a predetermined side surface of the honeycomb fired body in which predetermined ends of each cell are sealed, and on the adhesive paste layer,
  • the step of laminating other honeycomb fired bodies is sequentially repeated to produce a honeycomb block, but the honeycomb block may be produced by the following steps.
  • a honeycomb fired body having a predetermined shape such as a cylinder, is formed by combining and firing the honeycomb fired bodies at predetermined intervals by supporting and fixing both ends of the honeycomb fired bodies having a predetermined number of various shapes at predetermined positions. Is made.
  • the aggregate is desirably housed in a container having a predetermined shape, and the container having the predetermined shape preferably has substantially the same volume and shape as the aggregate.
  • an adhesive paste layer is formed between the honeycomb fired bodies by injecting an adhesive paste into the space formed between the honeycomb fired bodies through the injection port formed in the container. Then, it is set as the aggregate
  • a large square pillar-shaped honeycomb fired body aggregate is manufactured by the above bundling step, and then a honeycomb block having a cylindrical shape or a cylindrical column shape is manufactured by performing cutting using a diamond cutter or the like. Finally, a coating layer forming step is performed in which a coating agent paste is applied to the outer periphery of the honeycomb block, dried and solidified to form a coating layer.
  • a coating agent paste a paste similar to or different from the adhesive paste is used.
  • an aggregate of large square pillar-shaped honeycomb fired bodies is produced by a bundling process, and various types of honeycomb fired bodies having outer walls on their side surfaces are bonded with an adhesive.
  • a honeycomb block having a predetermined shape such as a cylinder may be produced, and a coat layer may be formed around the honeycomb block.
  • the coat layer is not necessarily provided, and may be provided as necessary.
  • the adhesive paste and the coating agent paste may be dried and solidified simultaneously.
  • the oxidation process is performed after the honeycomb fired body is manufactured (that is, between the firing process and the bonding process).
  • the method for manufacturing a honeycomb filter according to the first embodiment of the present invention between the bonding step and the outer periphery processing step, between the outer periphery processing step and the outer periphery coat layer forming step, or after the outer periphery coat layer forming step.
  • An oxidation step may be performed.
  • FIG. 5 is a cross-sectional view schematically showing an example of the exhaust gas purifying apparatus according to the first embodiment of the present invention.
  • An exhaust gas purification device 200 shown in FIG. 5 includes a metal casing 220 having a gas inlet side 221 and a gas outlet side 222, and a honeycomb filter 120 accommodated in the metal casing 220.
  • a honeycomb filter 120 having the same configuration as that of the honeycomb structure 100 shown in FIG. 1 is used. Then, similarly to the honeycomb fired body 110 shown in FIGS. 2A and 2B, any end portion of the cell 21 of the honeycomb fired body 20 constituting the honeycomb filter 120 is covered with a sealing material 24. It is sealed.
  • a holding sealing material 230 is disposed between the honeycomb filter 120 and the metal casing 220, and the honeycomb filter 120 is held by the holding sealing material 230.
  • the holding sealing material 230 is wound around the honeycomb filter 120.
  • the holding sealing material is a mat-like member having a substantially rectangular shape in plan view mainly made of inorganic fibers such as alumina.
  • an inlet pipe for introducing exhaust gas discharged from an internal combustion engine such as a diesel engine into the exhaust gas purification device 200 is connected to the gas inlet side 221 of the metal casing 220.
  • a discharge pipe for discharging the exhaust gas that has passed through the exhaust gas purification apparatus 200 to the outside is connected to the gas outlet side 222 of the metal casing 220.
  • the exhaust gas discharged from the internal combustion engine (in FIG. 5, the exhaust gas is indicated by G and the flow of the exhaust gas is indicated by an arrow) is sent from the gas inlet side 221 of the metal casing 220 to the exhaust gas purification device 200. Inflow. Thereafter, the exhaust gas G flows into the honeycomb filter 120 from the one end face 25 side of the honeycomb fired body 20. Specifically, the exhaust gas G flows into the cell 21 in which one end face 25 of the honeycomb fired body 20 is opened. The exhaust gas G passes through the cell wall 22 separating the cells 21. At this time, PM in the exhaust gas G is collected by the cell wall 22 and the exhaust gas G is purified.
  • the purified exhaust gas G flows into the cell 21 in which the other end face 26 of the honeycomb fired body 20 is opened, and is discharged out of the honeycomb filter 120. Then, the exhaust gas G is discharged out of the exhaust gas purification device 200 from the gas outlet side 222 of the metal casing 220.
  • the honeycomb filter usually rises to around 800 ° C., but when the regeneration process is performed in a so-called excessive trapping state in which the regeneration process timing is delayed and the amount of accumulated soot is larger than usual, the honeycomb filter
  • the temperature of the filter may be 1200 ° C. or higher.
  • honeycomb filter according to the present embodiment uses the honeycomb structure described in claim 1, cracks are generated even when the temperature of such a honeycomb filter becomes 1200 ° C. or higher. Hard to do. Even if a crack occurs, the crack generated in the honeycomb filter does not spread over the whole, and soot and other particulates can be prevented from leaking outside beyond the regulation value.
  • one honeycomb filter according to the first embodiment of the present invention may be accommodated in a metal casing, or a honeycomb structure used as another catalyst carrier It may be arranged with the body.
  • the honeycomb filter according to the first embodiment of the present invention manufactured by the above method is arranged in a metal casing. Specifically, a mat having a substantially rectangular shape in plan view mainly made of inorganic fibers is prepared as a holding sealing material, and the mat is wound around the honeycomb filter. And it can be set as an exhaust gas purification apparatus by press-fitting the honeycomb filter by which the mat
  • the metal casing is formed in a shape that can be separated into two parts, a first metal casing and a second metal casing, and a honeycomb filter around which a mat made of inorganic fibers is wound is placed on the first metal casing. It can also be set as an exhaust gas purification device by covering and sealing a second metal casing later.
  • a silicon-containing oxide layer is formed on the surface of the silicon carbide particles constituting the honeycomb fired body, and the endothermic reaction described above when the oxide layer is exposed to a high temperature of 1500 to 1600 ° C.
  • the honeycomb structured body is unlikely to increase in temperature due to the endothermic reaction, and the honeycomb structured body can be prevented from reaching a high temperature. Therefore, heat applied to the adhesive layer can be reduced, and crystallization (cristobarite) of the silica content of the adhesive layer can be prevented.
  • the adhesive layer constituting the honeycomb structure of the present embodiment includes at least an alumina fiber and an inorganic balloon.
  • the alumina fiber is used as a material in the adhesive layer, up to about 1400 ° C., Since it does not melt or undergo phase transformation, it has the effect of stopping the growth of cracks even at a high temperature of 1200 ° C. or higher, and the strength of the adhesive layer is unlikely to deteriorate.
  • the inorganic balloon has an effect of stopping the development of cracks, mechanical deterioration of the adhesive layer can be prevented.
  • the silica content in the adhesive layer is reduced by using an inorganic fiber, the change in thermal expansion due to the crystallization of the silica content described above is reduced.
  • the adhesive layer including the inorganic balloon has a small heat capacity, the thermal conductivity of the adhesive layer is increased, and the thermal stress difference between the honeycomb fired body and the adhesive layer generated during PM combustion is reduced. Can do. As a result, cracks generated in the adhesive layer due to the thermal stress difference can be suppressed, and cracks generated in the honeycomb fired body can be suppressed.
  • the adhesive layer constituting the honeycomb structure of the present embodiment includes an inorganic balloon having an average particle size of 70 to 300 ⁇ m, and this inorganic balloon is exactly the length of the alumina fiber. It has a good size, and both the alumina fiber and the inorganic balloon are more easily dispersed. The voids are uniformly dispersed and the adhesive layer becomes dense except for the portion where the inorganic balloon is present. Furthermore, the well-dispersed inorganic balloon also has an effect of stopping the progress of cracks, so that even when cracks occur in the adhesive layer, the progress of cracks can be reliably stopped.
  • the adhesive layer including the inorganic balloon has a small heat capacity, the thermal conductivity of the adhesive layer is increased, and the thermal stress difference between the honeycomb fired body and the adhesive layer generated during PM combustion is reduced. Can do. As a result, cracks generated in the adhesive layer due to the thermal stress difference can be suppressed, and cracks generated in the honeycomb fired body can be suppressed.
  • the adhesive layer constituting the honeycomb structure of the present embodiment includes alumina fibers having an average length of 25 to 100 ⁇ m and appropriate length, alumina fibers in the adhesive layer are included in the adhesive layer. Dispersibility is improved. Due to this, the adhesive layer excluding the portion where the inorganic balloon is present has few voids and the like, has a dense structure, improves mechanical strength, and does not easily generate cracks. Moreover, since the alumina fiber having the above-described length has an effect of stopping the progress of cracks, the progress of the cracks can be stopped even if a crack occurs in the adhesive layer.
  • the adhesive layer constituting the honeycomb structure of the present embodiment includes alumina fibers having an aspect ratio of 3 to 30, the mechanical strength of the adhesive layer is further improved, and the adhesive Even when cracks occur in the layer, the progress of cracks can be more reliably stopped.
  • the thickness of the oxide layer of the silicon carbide particles in the honeycomb fired body constituting the honeycomb structure of the present embodiment is 100 to 600 nm, heat applied to the adhesive layer can be reduced, Crystallization (cristobalite) of the silica content in the adhesive layer can be prevented. Furthermore, as described above, the joint end portion of the neck becomes smooth, so that the mechanical strength is reduced. Moreover, since the thickness of the oxide layer is smaller than the thickness of the silicon carbide particles, even if the oxide layer is formed on the silicon carbide particles, the pressure loss of the honeycomb filter is not adversely affected.
  • the adhesive layer constituting the honeycomb structure of the present embodiment further includes inorganic particles and an inorganic binder, the alumina fibers, inorganic balloons, and inorganic particles in the adhesive layer are bonded by the inorganic binder.
  • the adhesive layer is excellent due to its mechanical properties.
  • the adhesive layer contact includes inorganic particles, the mechanical properties are improved.
  • the adhesive layer and the honeycomb fired body are more easily bonded by the inorganic binder.
  • a fly ash balloon can be included as an inorganic balloon in the adhesive layer constituting the honeycomb structure of the present embodiment.
  • This fly ash balloon is close to a sphere, and its components are silica and alumina, so it has excellent affinity with alumina fibers, and it becomes easier to disperse with some of the alumina fibers attached to the fly ash balloon. The progress of cracks and the like can be satisfactorily prevented.
  • the content of the alumina fiber in the adhesive layer constituting the honeycomb structure of the present embodiment is 5.0 to 50.0% by volume, the alumina fiber in the adhesive layer is favorably dispersed. be able to.
  • a fly ash balloon can be included as an inorganic balloon. Since this fly ash balloon is close to a sphere and its components are silica and alumina, there is no risk of melting or the like even when exposed to a high temperature of 1200 ° C. or higher. Furthermore, since the fly ash balloon has a small specific gravity, the heat capacity of the adhesive layer can be lowered. Thus, since the heat capacity of the adhesive layer can be reduced, the difference in thermal stress from the honeycomb fired body can be reduced. As a result, the occurrence of cracks in the adhesive layer due to the thermal stress difference can be suppressed, the cracks generated in the honeycomb fired body can be suppressed, and soot leakage can be suppressed.
  • Silicon carbide particles can be included as inorganic particles in the adhesive layer constituting the honeycomb structure of the present embodiment, and the adhesive layer containing silicon carbide has heat resistance and mechanical properties. It becomes an excellent adhesive layer.
  • the adhesive layer constituting the honeycomb structure of the present embodiment can contain a solidified product of silica sol or alumina sol as the inorganic binder, and silica sol or alumina sol as a raw material for forming the inorganic binder. By using, it becomes an adhesive layer excellent in heat resistance.
  • Example 1 Examples that more specifically disclose the first embodiment of the present invention will be described below. In addition, this invention is not limited only to these Examples.
  • Silicon carbide coarse powder 52.8% by weight having an average particle diameter of 22 ⁇ m and silicon carbide fine powder 22.6% by weight of an average particle diameter of 0.5 ⁇ m were dry-mixed. 2.1% by weight of resin, 4.6% by weight of organic binder (methyl cellulose), 2.8% by weight of lubricant (Unilube manufactured by NOF Corporation), 1.3% by weight of glycerin, and 13.8% by weight of water were added. The mixture is kneaded to obtain a mixed composition, followed by an extrusion molding step of extrusion molding. A raw honeycomb having the same shape as that shown in FIG. A molded body was produced.
  • the raw honeycomb molded body is dried using a microwave dryer to obtain a dried honeycomb molded body, and then a predetermined cell is filled with a paste having the same composition as that of the generated molded body. Used to dry.
  • a degreasing process for degreasing the dried honeycomb molded body at 400 ° C. is performed, and a firing process is performed under a normal pressure argon atmosphere at 2200 ° C. for 3 hours, with a porosity of 42% and an average pore diameter of 9 ⁇ m.
  • the following oxidation process was performed on the obtained honeycomb fired body.
  • the temperature is raised from room temperature at a heating rate of 1 ° C./min in an air atmosphere, and when the maximum temperature reaches 1200 ° C., the temperature is maintained for 3 hours and then gradually heated to room temperature. The temperature was lowered and taken out at room temperature (25 ° C.).
  • the surface of the honeycomb fired body was oxidized.
  • alumina fiber having an average fiber length of 60 ⁇ m SiO 2 : 20 wt%, Al 2 O 3 : 80 wt% mullite fiber
  • fly ash balloon average particle diameter: 300 ⁇ m
  • carbonization having an average particle diameter of 0.5 ⁇ m Silicone particles, silica sol (solid content concentration: 30% by weight), carboxymethylcellulose, polyvinyl alcohol, and water were mixed and kneaded to prepare an adhesive paste.
  • a honeycomb fired body is placed on a table 400 having a V-shaped cross section as shown in FIG. 4 along the V-shape of the table 400, and the adhesive paste having the above composition is applied to the honeycomb fired body 110.
  • the adhesive paste layer was formed by applying the squeegee on the side facing upward. Then, the process of sequentially laminating the other honeycomb fired bodies 110 on the adhesive paste layer is repeated to produce 16 honeycomb fired bodies 110 bonded through the adhesive paste layer, and 180 ° C. By drying and solidifying the adhesive paste layer in 20 minutes, a prismatic honeycomb aggregate having a thickness of the adhesive layer 101 of 1 mm was produced.
  • a Quanta SXM manufactured by ULVAC-PHI was used as the XPS apparatus, and a monochromated Al-K ⁇ ray (Monochromated Al-K ⁇ ) was used as the X-ray source.
  • the measurement conditions were voltage: 15 kV, output: 25 W, measurement area: 100 ⁇ m ⁇ .
  • the ion sputtering conditions were ion species: Ar + , voltage: 1 kV, and sputtering rate (SiO 2 conversion): 1.5 nm / min.
  • PM leakage amount measuring apparatus includes a 2L (liter) common rail diesel engine, an exhaust gas pipe for circulating exhaust gas from the engine, and a metal casing connected to the exhaust gas pipe and having a honeycomb filter fixed via a holding sealing material. And a PM counting device (MEXA-100SPCS, manufactured by HORIBA) capable of integrating and counting the number of PMs after passing through the honeycomb filter.
  • PM counting device MEXA-100SPCS, manufactured by HORIBA
  • honeycomb filter honeycomb filter
  • Example 1 and Comparative Example 1 The honeycomb structure (honeycomb filter) according to Example 1 and Comparative Example 1 was subjected to PM collection by the following procedure, and then regenerated.
  • the honeycomb filter manufactured in Example 1 and Comparative Example 1 is arranged in the exhaust passage of the engine, and further, on the gas inflow side of the honeycomb filter, a catalyst support (diameter: 200 mm, A length: 100 mm, a cell density: 400 cells / inch 2 , and a platinum carrying amount: 5 g / L) were installed to obtain an exhaust gas purification device.
  • a catalyst support diameter: 200 mm, A length: 100 mm, a cell density: 400 cells / inch 2 , and a platinum carrying amount: 5 g / L
  • the engine was operated so that the engine speed was 1500 min ⁇ 1 and the torque was 50 Nm, and the exhaust gas was circulated inside the honeycomb filter.
  • the operating conditions were changed so that the engine speed was 2000 min ⁇ 1 and the torque was 90 Nm, and the operation was continued until it became stable.
  • the honeycomb filter had a collection amount of 21 g / L, which was larger than the normal collection amount. PM was collected.
  • the differential pressure before and after the honeycomb filter was increased, and PM was burned. Thereafter, the differential pressure before and after the elevated honeycomb filter dropped due to PM combustion.
  • the operating conditions were returned to idling 10 seconds after the descent. Thereafter, the engine was operated in a normal mode so that the engine speed was 1500 min ⁇ 1 and the torque was 50 Nm, and the number of PM leaking from the honeycomb filter (# / km) was measured using the PM counting device. .
  • the number of PM indicates the number of PM leaking from the honeycomb filter when it is assumed that the engine has advanced by 1 km by operating the engine.
  • honeycomb filter honeycomb filter
  • a honeycomb fired body in which an oxide layer having a thickness of 200 nm was formed on silicon carbide particles was used.
  • the honeycomb structure according to the example in which the adhesive layer including the alumina fiber and the fly ash balloon is formed maintains strength even when exposed to high-temperature heat, and the temperature is 1200 ° C. or higher. It has been clarified that cracks do not spread over the entire surface even after exposure, and that particulates such as soot can be prevented from leaking outside beyond the regulation value.
  • a biosoluble fiber was used as the inorganic fiber added to the adhesive layer, no inorganic balloon was added, the honeycomb fired body was not oxidized, and the oxide layer was Those that were not formed have no oxide film on the honeycomb fired body, so when exposed to a temperature of 1200 ° C. or higher, the temperature of the honeycomb fired body increases, cracks spread throughout, and the strength of the adhesive layer also decreases. It was found that particulates such as soot leaked outside beyond the regulation value.
  • the ends of the cells may not be sealed.
  • Such a honeycomb structure can be suitably used as a catalyst carrier.
  • the shape of the honeycomb fired body is not particularly limited, but it is desirable that the honeycomb fired bodies be easily bundled when the honeycomb fired bodies are bound together to produce a honeycomb structure.
  • a square, a rectangle, a hexagon, a fan shape, etc. are mentioned.
  • the shape of the honeycomb structure of the present invention is not limited to a columnar shape, and may be an arbitrary shape such as an elliptical column shape or a rectangular column shape.
  • the wet mixture that is the raw material of the honeycomb formed body may contain an organic binder, a plasticizer, a lubricant, a dispersion medium liquid, and the like in addition to the ceramic powder as the main component of the honeycomb structure.
  • the organic binder is not particularly limited, and examples thereof include methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, and polyethylene glycol. Of these, methylcellulose is desirable.
  • the blending amount of the organic binder is usually preferably 1 to 10 parts by weight with respect to 100 parts by weight of the ceramic powder.
  • plasticizer For example, glycerol etc. are mentioned.
  • the lubricant is not particularly limited, and examples thereof include polyoxyalkylene compounds such as polyoxyethylene alkyl ether and polyoxypropylene alkyl ether. In some cases, the plasticizer and the lubricant may not be contained in the mixed raw material powder.
  • the dispersion medium liquid examples include water, organic solvents such as benzene, alcohols such as methanol, and the like.
  • a molding aid may be added to the wet mixture.
  • the molding aid is not particularly limited, and examples thereof include ethylene glycol, dextrin, fatty acid, fatty acid soap, polyalcohol and the like.
  • a pore-forming agent such as balloons that are fine hollow spheres containing oxide ceramics, spherical acrylic particles, and graphite may be added to the wet mixture as necessary.
  • the balloon is not particularly limited, and examples thereof include an alumina balloon, a glass micro balloon, a shirasu balloon, a fly ash balloon (FA balloon), and a mullite balloon. Of these, alumina balloons are desirable.
  • the sealing material paste for sealing the cell is not particularly limited, but it is desirable that the porosity of the sealing material manufactured through a subsequent process is 30 to 75%, for example, the same as the wet mixture is used. be able to.
  • the honeycomb structure may carry a catalyst for purifying exhaust gas.
  • a catalyst for purifying exhaust gas for example, a noble metal such as platinum, palladium, rhodium or the like is desirable, and among these, platinum is more desirable.
  • other catalysts for example, alkali metals such as potassium and sodium, and alkaline earth metals such as barium can be used. These catalysts may be used alone or in combination of two or more.
  • a method of manufacturing the honeycomb structure of the present invention a plurality of honeycomb aggregates are produced, and an adhesive paste layer (adhesive paste layer containing a foam material) is formed on the side surface of the honeycomb aggregate, A method of binding a plurality of honeycomb aggregates in the binding step may be used.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Combustion & Propulsion (AREA)
  • Filtering Materials (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Ceramic Products (AREA)
PCT/JP2012/058471 2012-03-29 2012-03-29 Structure en nid d'abeilles, filtre en nid d'abeilles pour purification de gaz d'échappement et dispositif de purification de gaz d'échappement Ceased WO2013145245A1 (fr)

Priority Applications (4)

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JP2014507209A JP5990572B2 (ja) 2012-03-29 2012-03-29 ハニカム構造体、排ガス浄化用ハニカムフィルタ及び排ガス浄化装置
PCT/JP2012/058471 WO2013145245A1 (fr) 2012-03-29 2012-03-29 Structure en nid d'abeilles, filtre en nid d'abeilles pour purification de gaz d'échappement et dispositif de purification de gaz d'échappement
EP12872399.6A EP2832710B1 (fr) 2012-03-29 2012-03-29 Structure en nid d'abeilles, filtre en nid d'abeilles pour purification de gaz d'échappement et dispositif de purification de gaz d'échappement
US14/499,249 US20150013284A1 (en) 2012-03-29 2014-09-29 Honeycomb structured body, exhaust gas purifying honeycomb filter, and exhaust gas purifying device

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PCT/JP2012/058471 WO2013145245A1 (fr) 2012-03-29 2012-03-29 Structure en nid d'abeilles, filtre en nid d'abeilles pour purification de gaz d'échappement et dispositif de purification de gaz d'échappement

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150275725A1 (en) * 2014-03-26 2015-10-01 Ngk Insulators, Ltd. Honeycomb structure
US20160257619A1 (en) * 2015-03-04 2016-09-08 Tyk Corporation Silicon carbide-natured refractory block
US9944552B2 (en) 2013-07-22 2018-04-17 Morgan Advanced Materials Plc Inorganic fibre compositions
CN117122984A (zh) * 2014-12-16 2023-11-28 圣戈班生物高新材料(杭州)有限公司 模块化过滤器胶囊装置
JPWO2024203684A1 (fr) * 2023-03-30 2024-10-03
US12490765B2 (en) 2020-10-15 2025-12-09 Kt&G Corporation Wrapper for aerosol generating article and method of manufacturing same

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013186922A1 (fr) 2012-06-15 2013-12-19 イビデン株式会社 Filtre en nid d'abeilles
WO2013186923A1 (fr) 2012-06-15 2013-12-19 イビデン株式会社 Filtre en nid d'abeilles
WO2014054159A1 (fr) 2012-10-04 2014-04-10 イビデン株式会社 Filtre en structure alvéolaire
JP6239304B2 (ja) 2013-07-31 2017-11-29 イビデン株式会社 ハニカムフィルタ
JP6239305B2 (ja) 2013-07-31 2017-11-29 イビデン株式会社 ハニカムフィルタ
JP6239307B2 (ja) 2013-07-31 2017-11-29 イビデン株式会社 ハニカムフィルタ
JP6239303B2 (ja) * 2013-07-31 2017-11-29 イビデン株式会社 ハニカムフィルタ
JP6239306B2 (ja) * 2013-07-31 2017-11-29 イビデン株式会社 ハニカムフィルタ
JP7051524B2 (ja) * 2018-03-26 2022-04-11 日本碍子株式会社 多孔質材料、セル構造体および多孔質材料の製造方法
JP7184707B2 (ja) * 2019-06-18 2022-12-06 日本碍子株式会社 ハニカム構造体、電気加熱式ハニカム構造体、電気加熱式担体及び排気ガス浄化装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01184010A (ja) * 1988-01-14 1989-07-21 Toshiba Ceramics Co Ltd フイルター
JP2000218165A (ja) * 1999-01-29 2000-08-08 Ibiden Co Ltd ハニカムフィルタ及びその製造方法
WO2003067041A1 (fr) 2002-02-05 2003-08-14 Ibiden Co., Ltd. Filtre a nid d'abeille pour la decontamination des gaz d'echappement, matiere adhesive et de revetement, et procede d'obtention dudit filtre
WO2006137149A1 (fr) * 2005-06-24 2006-12-28 Ibiden Co., Ltd. Corps de structure en nid d’abeille
JP2007204360A (ja) * 2006-01-05 2007-08-16 Asahi Glass Co Ltd セラミックス接合用組成物およびセラミックス接合体
WO2008120386A1 (fr) * 2007-03-29 2008-10-09 Ibiden Co., Ltd. Structure de nid d'abeilles
JP2011037675A (ja) * 2009-08-13 2011-02-24 Shin-Etsu Chemical Co Ltd 炭化珪素の製造方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002530175A (ja) * 1998-11-20 2002-09-17 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ コードレス走査ヘッドの充電器を備える超音波診断イメージングシステム
JP4870559B2 (ja) * 2005-03-28 2012-02-08 イビデン株式会社 ハニカム構造体
JP2006289237A (ja) * 2005-04-08 2006-10-26 Ibiden Co Ltd ハニカム構造体
EP1806329A3 (fr) * 2006-01-05 2008-09-03 Asahi Glass Company, Limited Composition de liant céramique et article lié par céramique
EP2008985B1 (fr) * 2006-03-30 2015-06-24 NGK Insulators, Ltd. Eléments joints, structure en nid d'abeille ainsi obtenue
PL2174921T3 (pl) * 2007-07-26 2015-09-30 Ngk Insulators Ltd Materiał wiążący dla struktury typu plastra miodu i struktura typu plastra miodu wykorzystująca ten materiał
JP5478259B2 (ja) * 2007-11-30 2014-04-23 日本碍子株式会社 炭化珪素質多孔体
EP2441513B1 (fr) * 2010-10-13 2013-08-07 Ibiden Co., Ltd. Corps de catalyseur en nid d'abeille et son procédé de fabrication

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01184010A (ja) * 1988-01-14 1989-07-21 Toshiba Ceramics Co Ltd フイルター
JP2000218165A (ja) * 1999-01-29 2000-08-08 Ibiden Co Ltd ハニカムフィルタ及びその製造方法
WO2003067041A1 (fr) 2002-02-05 2003-08-14 Ibiden Co., Ltd. Filtre a nid d'abeille pour la decontamination des gaz d'echappement, matiere adhesive et de revetement, et procede d'obtention dudit filtre
WO2006137149A1 (fr) * 2005-06-24 2006-12-28 Ibiden Co., Ltd. Corps de structure en nid d’abeille
JP2007204360A (ja) * 2006-01-05 2007-08-16 Asahi Glass Co Ltd セラミックス接合用組成物およびセラミックス接合体
WO2008120386A1 (fr) * 2007-03-29 2008-10-09 Ibiden Co., Ltd. Structure de nid d'abeilles
JP2011037675A (ja) * 2009-08-13 2011-02-24 Shin-Etsu Chemical Co Ltd 炭化珪素の製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2832710A4

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9944552B2 (en) 2013-07-22 2018-04-17 Morgan Advanced Materials Plc Inorganic fibre compositions
US20150275725A1 (en) * 2014-03-26 2015-10-01 Ngk Insulators, Ltd. Honeycomb structure
JP2015187044A (ja) * 2014-03-26 2015-10-29 日本碍子株式会社 ハニカム構造体
US9429054B2 (en) * 2014-03-26 2016-08-30 Ngk Insulators, Ltd. Honeycomb structure
CN117122984A (zh) * 2014-12-16 2023-11-28 圣戈班生物高新材料(杭州)有限公司 模块化过滤器胶囊装置
US20160257619A1 (en) * 2015-03-04 2016-09-08 Tyk Corporation Silicon carbide-natured refractory block
US12490765B2 (en) 2020-10-15 2025-12-09 Kt&G Corporation Wrapper for aerosol generating article and method of manufacturing same
JPWO2024203684A1 (fr) * 2023-03-30 2024-10-03
WO2024203684A1 (fr) * 2023-03-30 2024-10-03 日本碍子株式会社 Filtre en nid d'abeilles

Also Published As

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EP2832710A1 (fr) 2015-02-04
EP2832710A4 (fr) 2015-06-03
JP5990572B2 (ja) 2016-09-14
EP2832710B1 (fr) 2019-06-19
JPWO2013145245A1 (ja) 2015-08-03
US20150013284A1 (en) 2015-01-15

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